外贴CFRP或钢条带加固混凝土双向板的受力性能及承载力计算

外贴碳纤维(CFRP)布和钢板补强技术已广泛用于加固钢筋混凝土结构，迄今为止，对外贴碳纤维或钢板的加固梁的研究已做了许多，但对用该技术加固钢筋混凝土板的研究还很少。为此，本文着重对受集中荷载的外贴碳纤维或钢板条带的钢筋混凝土加固双向板的受力性能进行了试验研究。并采用塑性铰线理论对该类板的塑性铰线模式和加固板的承载力进行了分析和计算。

Study on the Behavior and Strength of the RC Two-way Slabs Bonded with CFRP or Steel Strips

The strengthening technique by use of the bonded external CFRP (carbon fiber reinforced polymer) or steel plates has been widely applied to the renovation of reinforced concrete structures. So far, a great deal of research work has been done for RC beams strengthened by bonded CFRP or steel plate, but only rather little for two-way RC slabs. Therefore, experimental study on the behavior of the strengthened two-way slabs bonded with strips made of CFRP or steel and subjected to a central patch load was carried out by the authors. The yield line patterns of the testing slabs were analyzed in this paper and the calculation approach to determine the load-carrying capacity of the strengthened slabs was proposed by means of the yield line method.